baksmali.java revision 92d690894a3d91f776c39fb83b464f1d0c3e422a
1/* 2 * [The "BSD licence"] 3 * Copyright (c) 2010 Ben Gruver (JesusFreke) 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29package org.jf.baksmali; 30 31import com.google.common.collect.ImmutableList; 32import org.jf.baksmali.Adaptors.ClassDefinition; 33import org.jf.dexlib.Code.Analysis.InlineMethodResolver; 34import org.jf.dexlib2.iface.ClassDef; 35import org.jf.dexlib2.iface.DexFile; 36import org.jf.dexlib2.util.SyntheticAccessorResolver; 37import org.jf.util.ClassFileNameHandler; 38import org.jf.util.IndentingWriter; 39 40import java.io.*; 41import java.util.ArrayList; 42import java.util.Collections; 43import java.util.Comparator; 44import java.util.List; 45import java.util.regex.Matcher; 46import java.util.regex.Pattern; 47 48public class baksmali { 49 public static boolean noParameterRegisters = false; 50 public static boolean useLocalsDirective = false; 51 public static boolean useSequentialLabels = false; 52 public static boolean outputDebugInfo = true; 53 public static boolean addCodeOffsets = false; 54 public static boolean noAccessorComments = false; 55 public static boolean deodex = false; 56 public static InlineMethodResolver inlineResolver = null; 57 public static int registerInfo = 0; 58 public static String bootClassPath; 59 60 public static SyntheticAccessorResolver syntheticAccessorResolver = null; 61 62 public static void disassembleDexFile(String dexFilePath, DexFile dexFile, boolean deodex, String outputDirectory, 63 String[] classPathDirs, String bootClassPath, String extraBootClassPath, 64 boolean noParameterRegisters, boolean useLocalsDirective, 65 boolean useSequentialLabels, boolean outputDebugInfo, boolean addCodeOffsets, 66 boolean noAccessorComments, int registerInfo, boolean ignoreErrors, 67 String inlineTable, boolean checkPackagePrivateAccess) 68 { 69 baksmali.noParameterRegisters = noParameterRegisters; 70 baksmali.useLocalsDirective = useLocalsDirective; 71 baksmali.useSequentialLabels = useSequentialLabels; 72 baksmali.outputDebugInfo = outputDebugInfo; 73 baksmali.addCodeOffsets = addCodeOffsets; 74 baksmali.noAccessorComments = noAccessorComments; 75 baksmali.deodex = deodex; 76 baksmali.registerInfo = registerInfo; 77 baksmali.bootClassPath = bootClassPath; 78 79 //TODO: uncomment 80 /*if (registerInfo != 0 || deodex || verify) { 81 try { 82 String[] extraBootClassPathArray = null; 83 if (extraBootClassPath != null && extraBootClassPath.length() > 0) { 84 assert extraBootClassPath.charAt(0) == ':'; 85 extraBootClassPathArray = extraBootClassPath.substring(1).split(":"); 86 } 87 88 if (dexFile.isOdex() && bootClassPath == null) { 89 //ext.jar is a special case - it is typically the 2nd jar in the boot class path, but it also 90 //depends on classes in framework.jar (typically the 3rd jar in the BCP). If the user didn't 91 //specify a -c option, we should add framework.jar to the boot class path by default, so that it 92 //"just works" 93 if (extraBootClassPathArray == null && isExtJar(dexFilePath)) { 94 extraBootClassPathArray = new String[] {"framework.jar"}; 95 } 96 ClassPath.InitializeClassPathFromOdex(classPathDirs, extraBootClassPathArray, dexFilePath, dexFile, 97 checkPackagePrivateAccess); 98 } else { 99 String[] bootClassPathArray = null; 100 if (bootClassPath != null) { 101 bootClassPathArray = bootClassPath.split(":"); 102 } 103 ClassPath.InitializeClassPath(classPathDirs, bootClassPathArray, extraBootClassPathArray, 104 dexFilePath, dexFile, checkPackagePrivateAccess); 105 } 106 107 if (inlineTable != null) { 108 inlineResolver = new CustomInlineMethodResolver(inlineTable); 109 } 110 } catch (Exception ex) { 111 System.err.println("\n\nError occured while loading boot class path files. Aborting."); 112 ex.printStackTrace(System.err); 113 System.exit(1); 114 } 115 }*/ 116 117 File outputDirectoryFile = new File(outputDirectory); 118 if (!outputDirectoryFile.exists()) { 119 if (!outputDirectoryFile.mkdirs()) { 120 System.err.println("Can't create the output directory " + outputDirectory); 121 System.exit(1); 122 } 123 } 124 125 //sort the classes, so that if we're on a case-insensitive file system and need to handle classes with file 126 //name collisions, then we'll use the same name for each class, if the dex file goes through multiple 127 //baksmali/smali cycles for some reason. If a class with a colliding name is added or removed, the filenames 128 //may still change of course 129 List<ClassDef> classDefs = new ArrayList<ClassDef>(dexFile.getClasses()); 130 Collections.sort(classDefs, new Comparator<ClassDef>() { 131 public int compare(ClassDef classDef1, ClassDef classDef2) { 132 return classDef1.getType().compareTo(classDef2.getType()); 133 } 134 }); 135 classDefs = ImmutableList.copyOf(classDefs); 136 137 if (!noAccessorComments) { 138 syntheticAccessorResolver = new SyntheticAccessorResolver(classDefs); 139 } 140 141 ClassFileNameHandler fileNameHandler = new ClassFileNameHandler(outputDirectoryFile, ".smali"); 142 143 for (ClassDef classDef: classDefs) { 144 /** 145 * The path for the disassembly file is based on the package name 146 * The class descriptor will look something like: 147 * Ljava/lang/Object; 148 * Where the there is leading 'L' and a trailing ';', and the parts of the 149 * package name are separated by '/' 150 */ 151 152 String classDescriptor = classDef.getType(); 153 154 //validate that the descriptor is formatted like we expect 155 if (classDescriptor.charAt(0) != 'L' || 156 classDescriptor.charAt(classDescriptor.length()-1) != ';') { 157 System.err.println("Unrecognized class descriptor - " + classDescriptor + " - skipping class"); 158 continue; 159 } 160 161 File smaliFile = fileNameHandler.getUniqueFilenameForClass(classDescriptor); 162 163 //create and initialize the top level string template 164 ClassDefinition classDefinition = new ClassDefinition(classDef); 165 166 //write the disassembly 167 Writer writer = null; 168 try 169 { 170 File smaliParent = smaliFile.getParentFile(); 171 if (!smaliParent.exists()) { 172 if (!smaliParent.mkdirs()) { 173 System.err.println("Unable to create directory " + smaliParent.toString() + " - skipping class"); 174 continue; 175 } 176 } 177 178 if (!smaliFile.exists()){ 179 if (!smaliFile.createNewFile()) { 180 System.err.println("Unable to create file " + smaliFile.toString() + " - skipping class"); 181 continue; 182 } 183 } 184 185 BufferedWriter bufWriter = new BufferedWriter(new OutputStreamWriter( 186 new FileOutputStream(smaliFile), "UTF8")); 187 188 writer = new IndentingWriter(bufWriter); 189 classDefinition.writeTo((IndentingWriter)writer); 190 } catch (Exception ex) { 191 System.err.println("\n\nError occured while disassembling class " + classDescriptor.replace('/', '.') + " - skipping class"); 192 ex.printStackTrace(); 193 smaliFile.delete(); 194 } 195 finally 196 { 197 if (writer != null) { 198 try { 199 writer.close(); 200 } catch (Throwable ex) { 201 System.err.println("\n\nError occured while closing file " + smaliFile.toString()); 202 ex.printStackTrace(); 203 } 204 } 205 } 206 207 if (!ignoreErrors && classDefinition.hadValidationErrors()) { 208 System.exit(1); 209 } 210 } 211 } 212 213 private static final Pattern extJarPattern = Pattern.compile("(?:^|\\\\|/)ext.(?:jar|odex)$"); 214 private static boolean isExtJar(String dexFilePath) { 215 Matcher m = extJarPattern.matcher(dexFilePath); 216 return m.find(); 217 } 218} 219